The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2013
Filed:
Dec. 22, 2010
Applicant:
Noriaki Nakagawa, Inuyama, JP;
Inventor:
Noriaki Nakagawa, Inuyama, JP;
Assignee:
Nakagawa Sangyo Co., Ltd., Inuyama-Shi, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D 51/16 (2006.01); B23P 17/00 (2006.01); B21D 3/00 (2006.01); B21D 19/00 (2006.01); B21D 41/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for forming a flange at an open end of a pipe comprises increasing the diameter of the open end of the pipe to form a radially-enlarged pipe wall. Radially-symmetric portions of the radially-enlarged pipe wall are then removed so as to form at least two opposing projecting portions, which are then bent outwardly so as to be at least substantially orthogonal to the pipe, thereby forming the flange on the pipe.